Lathe attachment.



M. s'. KIMBLB. LATHE ATTACHMENT'.

APPLICATION FILED JULY 27, 1903` H0 MODEL.

ATTO RN E Y gitudinal section of the tool-holding arm.

UNITED STATES Patented May 31, 1904.

PATENT OFFICE.

MILTON s. KIMBLE, OE MAssILLON, OHIO.

LATHE ATTACHIVI ENT SPECIFICATION forming' part of Letters Patent No.761,502, dated'May 31 1904.

kApplication filed Tuly 2i7, 1903. Serial No. 167,093. (No model.)

To all whom-t may concern.:

Be it knownthat I, MILTON S. KIMBLE, a citizen of the United States,residing at Massillon, in the countyof Stark and State of Ohio,`

upon properly connected. Fig-2 is a top` view of the lathe-bed, showingthe object designed to be operated upon properly connected and thedifferent parts arranged in lrelation With each other. Fig. 3 is a rearend view of .the tool-holding base and the tool4holdingV armyshowing atransverse section of the pattern. Fig. 4L is a longitudinal sectionofthe tool-holding base, showing thetracks o'r-ways properly connected andalso showinga lon- The `present invention has relation to latheattachments designed more 'especially for' turning molds for bottles orother kinds of glassware; but of course I do not desire to be confinedto any particular use'eXcept to lcarry out the object and purposehereinafter clamps, such as 2, the mold or other article designed tobeoperated upon by my im proved tool orv attachment. In this instancethe mold 3 is especially designed for forming bottles and is made insections or halves and `the sections or halves properly connected`together when attached to the chuck 1, and it will of course beunderstood that the mold proper should be properly centered.

To the tool post or head 1 is attached in any convenient and well-knownmanner the plate or bar V5, to which plate or bar is pivot- `ally*attached the tool-,bar 6, to the forward end ofrwhich is attached orformed integral therewith the cutting-tool 7, which cuttingj tool isformed inthe usual manner and attached in any convenient and well-knownway. l

It will of course be understood that ditferl ent tools may be attachedto the tool-bar 6, reference being had to the kind of work designed tobe performed.

The tool Aforms no particular part of the present invention withinitself; but of course vthe tool is necessary.V For the purpose oflcarrying out the objects hereinafter described the tool-bar 6 isprovided with the elongated slot 8, Vthrough which slot is passed a bolt9, whiclrbolt is fixed to the plate or bar 5.

The rear end of the plate or bar 5 is provided With the tracks `or ways10 and 11, the track 10 being formed straight and at right angles to thelongitudinal length of the plate or bar 5, and the track 11 is curved,the curvature being for the purpose of imparting a 15 is moved alongsaid track it must move in a straight line, andas the distance betweenthe curved track 11 and the straight track 10 varies the pin 12 will bemoved to and from the straight track 10, lwhich pin carries the tool-barwith it, or, in other words, imparts longitudinal movement to thetool-bar.

To the rear end of the tool-bar 6 is slidably connected the head 14, towhich head is securely attached the pattern contact-pin 15,

which pattern contact-pin is extend ed upward above the tool-bar 6 andbelow said tool-bar and its lower end provided with the notch or recess16, which notch or recess is tor the purpose of receiving the straighttrack or way 10, as illustrated in Fig. 8.

To the ordinary adjustable lathe tail-block 17 is attached in anyconvenient and wellknown manner the pattern 18. One side of the patternis provided with a curved edge 19, which curvededge necessarilycorresponds with the curvature of the mold or other article designed tobe operated upon and finished by the tool 7, and of course variouspatterns may be employed to produce various shapes of molds or otherarticles.

It will be understood that the tool-bar 6 must oscillate or rock uponits pivotal point, inasmuch as the cutting-tool must be kept in propercontact upon the curved surface of the article designed to be operatedupon, and in order that the cutting-tool may move in a straight line toand from a given center, and thereby prevent the tool from describing anarc, the tool-bar providedwith the cuttingtool is given a longitudinalmovement, as it will be understood if an arc is described thecutting-tool will be moved along the surface of the article operatedupon, and thereby skip some of the surface designed to be cut. In orderto overcome this objection, I provide the curved tracker Way 11, whichcurved track or way moves the tool-bar 6 longitudinally by means of thepin 12 and its recess 13, thereby causing the tool end of the bar 6 tomove to and from a common center in a line at right angles drawntransversely through the mold or article designed to be operated upon,and as the tool is moved longitudinally during the time it is oscillatedit rocks upon its pivot pin or post, which pivot pin or post is held infixed position with ret'- erence to the tool-bar. It will be understoodthat the rear end of tool-bar must also move longitudinally by theoscillation of said tool-bar; but in order to prevent the pattern-pin 15from any longitudinal movement with reference to the toolbar 6, or, inother words, to follow the longitudinal movement of the tool-bar, thestraight track or wayl() is provided, by which means the pattern-pin 15moves in a straight line to and from the pattern 18 and describes no arcas the tool-bar oscillates.

In order to compensate for the straight movement of the pin and at thesame time carry the tool-bar at its rear end, the sliding block 14C isprovided, which sliding block moves back and forth or to and from agiven center as the tool-bar oscillates.

'Ihe sliding block 14 is held in place by means of the tongues andgrooves 21. For the purpose, of assisting in preventing any springing,or bending of the tool-bar 6 the cap-bars 22 are provided, which barsmay be formed integral with the plate or bar 5.

It will be understood that the pattern 18 should be held in a rigidposition, and in order to assist in doing so the brace 28 is provided,which brace is connected to the front or forward end of the pattern 18in any convenient manner and is attached to the rear portion of thelathe at any desired point, as the only object is to steady the pattern.

It will be understood that the pattern-pin 15 should be extended upwarda sufiicient distance to come in proper contact with the working edgeo't' the pattern 18.

For the purpose of holding the tool-bar in true alinement when out ofcontact with the pattern the springs 24 are provided, which springs maybe of the form shown, or they may be ofiany other desired form.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a lathe attachment the combination of a tool-carriage carrying aplate provided with transverse tracks or ways, one ot' said tracks beingstraight and the other curved in such manner as to impart-longitudinalmotion to the tool, a slidingly-pivoted tool-bar having fixed thereto apin, said pin having arecessed end to engage the curved track, a slidinghead connected to the tool-bar and provided with a pin having a recessat its bottom or lower end adapted to engage the straight track, saidpin connected to the sliding head adapted to engage a working pattern,said working pattern having curved edges corresponding with thecurvature of the finished article, substantially as and for the purposespecified.

2. In a lathe attachment the combination oli a lathe-carriage, saidcarriage having connected thereto a plate or bar, a tool-bar piv-'otally connected to the plate or bar and provided with an elongatedslot at its pivotal point, transverse tracks or ways fixed to the plateor bar, one of said tracks being curved in such a manner as to impartlongitudinal motion to the tool and the other straight, a sliding headconnected to the tool-bar, pins adapted to engage the track or way, oneof said pins adapted to engage the straight track and the other adaptedto engage the curved track, said pins fixed to the tool-bar and thesliding head respectively, and a fixed pattern, the pin of the straighttrack adapted to engage the fixed pattern, substantially as and for thepurpose specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

MILTON S. KIMBLE.

Iitnessesz DAN. W. SHn'rLun, F. W. BOND.

IOO

